He would likely still have his chakra powers. Maybe he could use chakra in ways that were similar to alchemy, like transforming matter. For example, he could use his chakra to change the shape of a rock into a weapon, much like how alchemists transmute materials.
Since he is an ancestor, his powers could be more primitive but still very powerful. He might be able to manipulate natural energy in a way that was the basis for future alchemical studies. His Rasengan, for instance, could be seen as a precursor to some alchemical reaction. The spinning energy in the Rasengan could be related to how alchemists spin and combine elements in their transmutations.
In this fanfiction scenario, it might be that Naruto's values and beliefs were passed down through generations. His strong will and determination could have influenced the development of society in the world that later became Edward Elric's. This could have led to the creation of alchemy as a means to achieve power and knowledge, similar to how Naruto pursued power in his own world.
Yes, there are likely fanfictions out there with such a concept. The worlds of Naruto and Fullmetal Alchemist, where Edward Elric comes from, are quite different, but that's what makes the idea of a crossover in fanfiction so interesting. Writers might explore how Naruto's ninja world and its unique powers could interact with Edward's alchemical abilities and the complex world of Amestris.
He would probably teach students who are eager to learn alchemy, those with a thirst for knowledge and a bit of a rebellious streak like he had. Maybe students who are not satisfied with just the textbook knowledge but want to explore the deeper aspects of alchemy.
Edward could form strong friendships with the hobbits. Hobbits are known for their loyalty and kindness. They would be curious about Edward and his abilities. Edward, in turn, would appreciate their simple yet warm - hearted nature. He could help them in their adventures, using his alchemy skills, and they could offer him a sense of home and community that he might be missing from his own world.
He might have the power of foresight. Since he has lived for a thousand years, he could predict future events based on his past experiences. For instance, he could foresee an attack from an unknown enemy before it even happens.
In this fanfiction scenario, Naruto would inherit a host of Saiyan powers on top of his ninja skills. For starters, he would have the Saiyan's natural fighting instincts and the ability to quickly recover from injuries. His power level would constantly increase as he fought, similar to how Saiyans get stronger through battles. His existing jutsus like the Rasenshuriken could be infused with Saiyan energy, making it not only cut through opponents but also blast them with a powerful ki - like force. And with his Saiyan tail, if he had one, he might have an additional form or power that was unique to him, perhaps something that combined the power of the Great Ape form with his Nine - Tailed Fox form.
Naruto could inherit Frieza's ability to survive in space and extreme environments. Along with that, his Rasengan could take on new forms influenced by Frieza's energy. For example, it could be a purple - colored Rasengan with the destructive power of Frieza's attacks. He may also gain the power to transform like Frieza, with each transformation increasing his strength, speed, and overall combat capabilities.
In this fanfiction, he could gain the power of energy absorption. This means he could absorb any type of energy, be it magical, alchemical, or even kinetic energy from attacks against him and then use it to his advantage. For example, if an enemy attacked him with a fire - based spell, he could absorb the energy and then release it back as a more powerful attack. Or he could gain the power of astral projection, allowing his spirit to leave his body and explore places or gather information that would be otherwise inaccessible.
He might have powers like shape - shifting into a more demonic form. Maybe he could have the ability to breathe fire or some other elemental powers related to chaos or destruction. He could also have enhanced strength and speed that are far beyond what a normal ninja has, and his senses could be super - sharp to detect danger or prey.
He might have the power of instant teleportation. Just like a god can appear anywhere, Naruto could do the same to surprise his enemies or reach his friends in need quickly.